Date: Fri, 7 Nov 2008 23:59:59 -0500 From: Justin Hibbits <jrh29@alumni.cwru.edu> To: Peter Grehan <grehan@freebsd.org> Cc: freebsd-ppc@freebsd.org Subject: Re: graphics on G4 Message-ID: <20081108045959.GA1157@narn.knownspace> In-Reply-To: <20081022050101.EKN14563@dommail.onthenet.com.au> References: <20081022050101.EKN14563@dommail.onthenet.com.au>
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On Wed, Oct 22, 2008 at 05:01:01AM +1000, Peter Grehan wrote: > That sounds like a good place to start. For the case when the > program mmap's the video, does it write to all the pages ? One > thing to try would be to write a known value to screen memory > e.g. 0xdeadcode, and on exit see if that triggers a panic > rather than a hang. > > later, > > Peter. At long last I've reproduced the hang. I did write 0xdeadc0de to the framebuffer memory, but no panic, just a hang. At least, it seems to have been just a hang, as there was no panic trace displayed, everything just stopped. - Justin
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